CONTENTS. XXXV11 



MICROSCOPY'. 



A. Instruments, Accessories, etc. 

 (1) Stands. 



PAGE 



Nelson, Edward M. — Adams's "Variable" and the Evolution of the Modern 



Microscope. (Pigs. 25-30) 178 



Wixkels Stand No. 1 (Fig. 31) 248 



Travelling Microscope (Fig. 32) 248 



,, Dissecting Microscope (Fig. 33) 251 



Beck's London Microscope : Handle Model (Fig. 43) 406 



Winkel's Stand No. Id (Fig. 44) 406 



„ Demonstration Microscope toith Detachable Foot 407 



Bibliography 407 



Old Microscope by J. Simons : presented by Members of the Council (Fig. 49) . . 528 



Rejtos Metal -Microscope (Figs. 50-52) 53 L 



Reichert's New Metal-Microscope (Figs. 53-59) 532 



Garjeanne's Simple Excursion Microscope (Figs. 74. 75) 690 



Winkel's Demonstration Microscope toith Detachable Foot (Figs. 76, 77) .. .. 692 

 Sommerfeldt, E. — Recent Progress in the Construction of Mineralogical and Metal- 

 lurgical Microscopes 693 



A mann, J. — The Binocular Microscope 806 



Cambridge Scientific Instrument Co. — Comparator or Beading Microscope 



(Figs. 87, 88) 807 



(2) Eye-pieces and Objectives. 



Watson Baker, F. W. — Anomalies in Objective Screw Thread*. (Fig. 24) .. .. 175 



Edinger's Pointer- Double Ocular (Fig. 34) 252 



Bibliography 253 



Nelson, Edward M. — On Some New Objectives and Eye-pieces by 11. Winkel, of 



Gottingen 451 



Winkel's Eye-piece icith Screw Micrometer and Graduated Glass Diaphragm (Figs. 



60-61) 536 



Nelson. E. M. — The Society's Standard Thread 537 



Allan's Variable Eye-piece (Fig. 78) C93 



(3) Illuminating- and other Apparatus. 



Banfield, H. C. — Sliding nose-piece for use in Stereo-photomicrography (Fig. 4) .. 95 



Gage, H. P. — Arc Lamps for Projection 96 



Cepede, C. — Improvement in the Illumination of Objects observed with the Binocular 



Microscope 96 



Jentsch's Ultra-condenser (Figs. 5-7) 97 



Concentric Condenser (Figs. 8, 9) 98 



Ponzo. M. — Simple Method of making Drawings for Projection Purposes 100 



Jentsch's Electric Heating Apparatus for Microscopical Observations (Figs. 10-14) 100 



Sommerfeldt, E. — New Method for Microscopical Metallography (Fig. 35) .. .. 253 



Kohler, A. — Application of Mercury Light to Microscopical Works (Fig. 36) .. 253 



Heath, C. E. — New Microscope Lamp (Fig. 37) . 255 



Hilger, Adam — Microspectroscope (Fig. 38) 256 



Hipple, H. — Plug Micrometer (Fig. 39) 256 



Bibliography 256 



Houstodn, R. A. — Efficiency of Metallic Filament Lamps 408 



Reichekt's New Breath Screen (Fig. 45) 408 



